Placer County, California

Placer County population, land area and income

Placer County had 433,822 residents in the Census Vintage 2024 estimate, on 1,407.1 square miles of land. It ranks 22nd of 58 in California by population and 32nd by land area. That works out to 308.3 people per square mile, 3.2 times the US average of 96.3, and in the top quarter nationally.

The median county-equivalent in California has 187,274 residents, so Placer County is 2.3 times that size.

Its SAIPE 2023 median household income of $110,020 is in the top tenth among 3,143 counties with an estimate.

How Placer County's population changed since 2020

Placer County gained 27,871 residents between the July 2020 and July 2024 estimates, a rise of 6.9%. That ranks 2nd of 58 in California for growth. The median California county changed by -0.6%, and the state as a whole by -0.2%.

Since the April 2020 estimates base, Placer County recorded 15,378 births and 16,296 deaths, a natural change of -918. Net international migration added +5,071 and net domestic migration, people moving to or from other US counties, came to +25,142. The largest single component was domestic migration, which added 25,142 people.

Where Placer County is

The Census internal point of Placer County is at 39.062000, -120.722700. It sits in UTM zone 10N. The map shades California's 58 county-equivalents by population change from 2020 to 2024, darker for faster growth, with Placer County outlined. Dots are towns of 1,000+ people with residents in it.

Towns in Placer County

6 incorporated places of 1,000+ people have residents in Placer County, 317,478 people together, or 73% of the county. Each figure counts only the part of the town inside Placer County; towns marked "part" extend into another county. The largest is Roseville with 163,304.

Counties bordering Placer County

The Census 2024 county adjacency file lists 8 neighbors for Placer County, including 3 across a state line. The most populous is Sacramento County, CA, with 1,611,231 residents. Distances run between Census internal points in a straight line.

• Sacramento County

  1,611,231 people

  54 mi SW

• NV

  Washoe County, NV

  507,280 people

  128 mi NNE

• El Dorado County

  192,823 people

  22 mi SSE

• Nevada County

  102,195 people

  16 mi N

• Sutter County

  98,545 people

  53 mi W

• Yuba County

  87,469 people

  36 mi WNW

• NV

  Carson City, NV

  58,148 people

  53 mi E

• NV

  Douglas County, NV

  49,564 people

  61 mi E

Distance to Sacramento and the nearest big city

Sacramento is 53.4 miles SW of Placer County's internal point in a straight line. The nearest place of 100,000 or more is Roseville, CA (population 163,304), 37.9 miles away. The nearest place of 10,000 or more is Grass Valley, CA (population 14,085), 20.8 miles away.

Placer County FIPS code

The FIPS code of Placer County is 06061: state code 06 for California plus county code 061. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $110,020.